The difficulty lies in the identification of these places.

In the _Vita Secunda_, Nemthur and Campus Taberniae are identified.

Probus writes, that he had ascertained as a matter of certainty, that the _Vicus Bannave Taburniae regionis_ was situated in Neustria.

The Life supposed to be by St.Eleran, states that the parents of the saint were of Strats-Cludi (Strath-Clyde), but that he was born in Nemthur--"Quod oppidum in Campo Taburniae est;" thus indicating an early belief that France was the land of his nativity.

St.Patrick's mention of Britanniae, however, appears to be conclusive.